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A

If very small amount of AlCl_3 is added to gold sol, coagulation occurs, but if a large quantity of AlCl_3 is added, there is no coagulation

B

Organic ions are more strongly adsorbed on charged surfaces in comparison to inorganic ions

C

Both emulsifier and peptizing agents stabilize colloids but their action are different

D

Colloidal solution are thermodynamically stable

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VMC MODULES ENGLISH-SURFACE CHEMISTRY-LEVEL-1
  1. Associated colloid among the following is:

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  2. Which of the following ions is most effective in the coagulation of fe...

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  3. Select wrong statement.

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  4. Which one of the following impurities present in colloidal solution ca...

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  5. which one of the following is lyophilic colloid ?

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  6. Which of the following is not a property of colloidal solution?

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  7. When a sulphur sol is evaporated, solid sulphur is left. On mixing w...

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  8. In Langumir's model of adosrption of a gas on a solid surface :

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  9. Which of the following is true in respect of chemical adsorption?

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  10. If x/m is the mass of adsorbate adsorbed per unit mass of adsorbent, P...

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  11. Which of the following is an example of homogeneous catalysis?

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  12. What is autocatalysis ?

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  13. Assertion: A catalyst increases the rate of a reaction. Reason: In p...

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  14. Which of the following reaction characteristics change on additi...

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  15. Which is the wrong pair? (i) Starch solution: sol (ii) Aq. NaCl: Tru...

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  16. Among of electrolytes N(24)a2 S2 and NH4O the most effective agent for...

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  17. The most effective electrolyte for the coagulation of As2S3 Sol is

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  18. Which of the following is an emulsifier ?

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  19. Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10...

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  20. The number of moles of lead nitrate needed to coagulate 2 mole of coll...

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